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J/PAZh/26/27    Variability of Cyg X-1 (V1357) in 1995-1996  (Karitskaya+, 2000)
Variability of Cyg X-1 (V1357) in 1995-1996 during the hard and
soft spectral states.
      Karitskaya E.A., Goransky V.P., Grankin K.N., Mel'nikov S.Yu.
     <Pis'ma Astron. Zh. 26, 27 (2000)>
     =2000PAZh...26...27K
     =2000AstL...26...22K
ADC_Keywords: Binaries, X-ray ; Photometry, UBVRI


Abstract:
    Photoelectric UBVR photometry of Cyg X-1 with 1-m Tian'-Shan' and
    48-cm Maidanak Observatory reflectors from October 1995 through
    November 1996 are presented.
Object:
    -----------------------------------------------------------
        RA   (2000)  DE        Designation
    -----------------------------------------------------------
     19 58 21.7  +35 12 05.8   Cyg X-1 = V1357 Cyg = HD 226868
    -----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        75      115   Photoelectric observations of Cyg X-1


See also:
 J/AZh/78/408 : Variability of Cyg X-1 (V1357) in 1994-1998  (Karitskaya+, 2001)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1- 11  F11.3 d       JDH       [2450009/2450416] Heliocentric Julian date
  14- 18  F5.3  mag     Umag      U magnitude
  21- 25  F5.3  mag     e_Umag    Uncertainty in U magnitude
  28- 32  F5.3  mag     Bmag      B magnitude
  35- 39  F5.3  mag     e_Bmag    Uncertainty in B magnitude
  42- 46  F5.3  mag     Vmag      V magnitude
  49- 53  F5.3  mag     e_Vmag    Uncertainty in V magnitude
  56- 60  F5.3  mag     Rmag      ? R magnitude
  63- 67  F5.3  mag     e_Rmag    Uncertainty in R magnitude
  70- 71  I2    ---     N         Number of each night observations
  74- 75  A2    ---     Obs       [m t] Observations of U magnitudes:
                                         m - Mt.Maidanak observatory,
                                         t - Tian'-Shan' observatory

(End)                                 Veta Avedisova [INASAN]        10-Oct-2000